وما كان استغفار إبراهيم لأبيه إلا عن موعدة وعدها إياه فلما تبين (9:114) بالانجليزي

(9:114) As regards the prayer of Abraham for his father, it was only to fulfil a promise he had made to him, *112 but when he realized that he was an enemy of Allah, he disowned him. The fact is that Abraham was a tender-hearted, Godfearing and forbearing man. *113

Tafseer Abu-al-A'la Maududi

Page 205 English Traditional

*112) The reference is to what Prophet Abraham said when he broke off all connections with his father:
(1).....Peace be upon you. I will pray to my Lord to forgive you: for He is very kind to me" . (XIX: 47).
(2) "And forgive my father: indeed he is of those who have gone astray. And disgrace me not on the Day, when mankind shall be brought back to life; when neither riches nor children shall avail anyone, and none shall obtain salvation except the one who comes before his Lord with a sound and pure heart". (XXVI: 86-89).
(3). . . . .I will pray for your forgiveness, but I have no power to rescue you from Allah . . . . . " (LX: 4).
In the first place it should be noted that even the wording and the tone of the prayer for his father were very guarded, but when Prophet Abraham realized that the person for whom he was praying was an open rebel against Allah and a bitter enemy of His Way, he refrained himself from saying even such a guarded prayer for him and declared in clear words that he would have nothing to do with him in future, even though the rebel was his father who had brought him up with love and care.
*113) The words- .yi (swab) and (hatim) which the Qur'an uses for Prophet Abraham are very comprehensive in meaning. Avvah is the one who is lamenting, humble, weeping, grief-stricken and Godfearing. And hatim is the one who can keep control over himself under all circumstances, and is neither beside himself in anger and enmity nor transgresses the proper limits in his affections, friendships and relationships. Here both the words have been used in their comprehensive senses. Prophet Abraham prayed for his father because he was tender-hearted and lamented for him that he would become the fuel for the fire of Hell. As he had full control over himself, and was very forbearing, he prayed even for that father who had persecuted him cruelly in order to hinder him from the Way of Islam. Lastly, he was Godfearing and did not want to go beyond the limits in his love for his father; so he broke off all his relations with his father when he realized that he was an enemy of Allah.