Al-Inshiqaaq • EN-TAFSIR-IBN-ABBAS
﴿ وَٱلْقَمَرِ إِذَا ٱتَّسَقَ ﴾
“and the moon, as it grows to its fullness:”
(And by the moon when she is at the full) for three nights: the nights of the thirteenth, fourteenth and fifteenth of the lunar month