The word(s) "pledging" appears 2 time(s) in 2 verse(s) in Quran in Saheeh International translation.

(1) Indeed, those who pledge allegiance to you, [O Muhammad] - they are actually pledging allegiance to Allah. The hand of Allah is over their hands. So he who breaks his word only breaks it to the detriment of himself. And he who fulfills that which he has promised Allah - He will give him a great reward.

(2) O Prophet, when the believing women come to you pledging to you that they will not associate anything with Allah, nor will they steal, nor will they commit unlawful sexual intercourse, nor will they kill their children, nor will they bring forth a slander they have invented between their arms and legs, nor will they disobey you in what is right - then accept their pledge and ask forgiveness for them of Allah. Indeed, Allah is Forgiving and Merciful.