However...

However, if the intent of the verse is a complete blindness, which can be inferred from the literal view of the verse, then the Qur’anic phrase which says ‘and (forthwith) he regained his sight’ would imply that the return of his eyesight was a miracle that the Qur’an proves it. Explanations The knowledge of the prophets has its origin in the Divine knowledge. The prophets trust the promises of the Almighty as the Divine Will rules over all natural laws.

“He said: ‘Soon I will ask forgiveness for you from my Lord; He is the Forgiving, the Merciful’.” The great old man, who possessed a magnanimous spirit and with immense generosity, refrained from blaming them; instead he promised them that he would soon ask forgiveness for them from Allah.

The verse says: “He said: ‘Soon I will ask forgiveness for you from my Lord;...” It has been mentioned in some Islamic traditions that Ya‘qub’s (as) aim was to postpone acting upon their request until dawn the next Friday when would have been a more appropriate time for the acceptance of prayers and repentance.

Ya‘qub hoped that Allah would accept their repentance and overlook their sins, for Allah is Compassionate and Kind as the verse states: “…He is the Forgiving, the Merciful’.” This verse and the verse before it show that asking a third party to ask forgiveness from Allah for oneself not only is not incompatible with monotheism, but also provides a way to merit Allah’s approbation.