Najwa, Gharrar and Laghwa

The believer is one that does not engage in gharrar (buying & selling when person doesn't know wht they've bought or sold); najwa (involving the Nabi or muslim in a plan they know nothing about. Sometimes bad even if plan is for good); & laghwa (using ambiguous speech) Allah has said that there is no Laghwa in Paradise. I believe that doing these 3 things will cause the doer to lose Paradise (Jannah, The Gardens).
‎"They shall there exchange, one with another, a (loving) cup free of frivolity (laghwa), free of all taint of ill."~Holy Quran 52:23
{Laghwa means vain talk or obscene language, but, also connotes ambiguity.}

‎"Turnest thou not thy sight towards those who were forbidden secret counsels (najwa) yet revert to that which they were forbidden (to do)? And they hold secret counsels among themselves for iniquity and hostility, and disobedience to the Apostle. And when they come to thee, they salute thee, not as God salutes thee, (but in crooked ways): And they say to themselves, "Why does not God punish us for our words?" Enough for them is Hell: In it will they burn, and evil is that destination!
O ye who believe! When ye hold secret counsel (najwa), do it not for iniquity and hostility, and disobedience to the Prophet; but do it for righteousness and self- restraint; and fear God, to Whom ye shall be brought back.
Secret counsels (najwa) are only (inspired) by the Evil One, in order that he may cause grief to the Believers; but he cannot harm them in the least, except as God permits; and on God let the Believers put their trust."~Holy Quran 58:8-10

‎"Muslim relates from Abu Hurairah that, "The Messenger(saws) of Allah (swt) prohibited sales of whatever a pebble thrown by the seller hits and sales in which there is a chance of risk (gharrar)"
(Nasir al-Mutarriza:) Gharrar is chance or risk meaning it is not known whether it will come to be or not, such as selling fish in the water or birds on the wing. It includes transactions of unknown things, the particulars of which are not fully comprehended by the buyer and seller (al Mughrib fi tartib al-Mur'rib (y94), 2.100).

Gharrar is also mentioned at Holy Quran 7:22, "So by deceit (bi ghuruwr) he brought about their fall: when they tasted of the tree, their shameful parts became manifest to them, and they began to sew together the leaves of the Garden over their bodies. And their Lord called unto them: "Did I not forbid you that tree, and tell you that Satan (Aoudhubillahi) was an avowed enemy unto you?"

It is probably safe to say that the only ones that are free to practice Najwa would be Allah (swt) Himself and His Malaika (Angels). But, it is permissible for doing good and righteousness.

(Suratul Insan Ayat 16)³³³¹¹³³²

16. Crystal-clear, made of silver: they will determine the measure thereof (according to their wishes). ~ Holy Quran
It is apparent here that measuring is a characteristic of the people of Paradise (Heavens, The Gardens, Al Jannah). But, does it not seem paradoxical that in the very place where there is infinite bounties, (without measure and rivers flowing with incorruptible milk, water, honey and wine), that anyone would feel the need to measure anything? But, Heaven is not being a pig. Eatting and eatting and drinking and drinking with hungers never being satisfied and thirsts never being quenched...Heaven is not a place that produces pig like behaviors and characteristics in it's inhabitants. {Of course, these are my beliefs I have not actually been there yet, insha Allah} Perhaps, it is as simple as knowing that measuring too little would be annoying and a nuisance...like not being satisfied, nor relieved of a need; and measuring too much would be uncomfortable (like eatting so much that the stomach begins to hurt and it feels stretched (because it actually is) and the person has to loosen the belt and is so uncomfortable that they cannot even be productive until the pain of the stretched stomach goes away. I infer from this ayat that this is something that the people of Paradise (who are the highly evolved beings of Allah and of superior civility and society than we have ever known on earth) do not wish to experience, by the portion of the ayat that reads, "they will determing the measure thereof (according to their wishes). ~ Holy Quran" In so many ways Allah teaches us that gluttony is not becoming of Paradise, especially when he teaches the ayat, "That I have enjoined upon you fasting that you may restrain yourselves. ~ Holy Quran." A glutton is someone that eats or consumes even when they are not hungry, but, also would describe a person who's hunger and thirst is never satisfied. Food and drink or water are not the only things that people hunger and thirst for, and thus, are not the only things that people can become excessive about and so need to practice restraints about. Why then is it necessary for Allah to teach mankind and the Alamin to restrain themselves? Is it because it was the appetites of Father Adama (saws) and Mother Huwa (saws) unchecked by restraint that brought about our downfall from heaven, in the first place. Thus, this subtle suggestion of the inhabitants of Paradise in the ayat, "they will determing the measure thereof (according to their wishes). ~ Holy Quran" really speaks to the very nature that brought about our parents downfall from heaven in the first place....and He (Allah (swt)) wants us to undo that nature, that is against the nature of Paradise, within us.