ANSWER:

This is not sinful but definitely not recommended or from the sunnah. In fact Prophet salla Allahu alaihi wa sallam prescribed us to leave one third part of the stomach free and not fill it up full even in normal days.

Is it sinful to eat quite a lot of food before fasting (Suhoor)?

Etiquette, Morals and Heart-Softeners, Fasting | May 4, 2021 1:49 pm
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While gargaling the mouth in wudu after spiting out once do spit again so that there are no remains what if we swolow remains after spiting once
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Which is best to do in laylatul Qadr sleeping and then praying tahajjud or praying without sleeping. And if we are not sleeping and which prayer will that be is it taraweeh or should we intend qiyamu layl.