﴿ إِذْ أَوْحَيْنَآ إِلَىٰٓ أُمِّكَ مَا يُوحَىٰٓ ﴾

“when We inspired thy mother with this inspiration:”

when idh for explanation of that favour We revealed to your mother either in her sleep or by way of inspiration — when she gave birth to you and feared that Pharaoh would have you slain for being one of the newborn of the Children of Israel — that which was revealed regarding your affair this mā yūhā ‘that which was revealed’ is substituted by what follows an iqdhifīhi …