There is not upon the blind [any] constraint nor upon the lame constraint nor upon the ill constraint nor upon yourselves when you eat from your [own] houses or the houses of your fathers or the houses of your mothers or the houses of your brothers or the houses of your sisters or the houses of your father's brothers or the houses of your father's sisters or the houses of your mother's brothers or the houses of your mother's sisters or [from houses] whose keys you possess or [from the house] of your friend. There is no blame upon you whether you eat together or separately. But when you enter houses, give greetings of peace upon each other - a greeting from Allāh, blessed and good. Thus does Allāh make clear to you the verses [of ordinance] that you may understand.
Sahih International
لَّيْسَ
laysa
Not is
Word breakdown
ليْس
Fi'l · VerbNot is
to not be, negation of existence or state
89× in the Quran · Occasional
Grammar rules
لَّيْسَ (Not is) is a past tense verb — the action already happened and is complete.
We translate it in past tense — "did", "created", "said", etc.
Lesson 8 · Verbs — Past & Present