The word(s) "pledge" appears 12 time(s) in 9 verse(s) in Quran in Mohsin Khan translation.

(1) And if you are on a journey and cannot find a scribe, then let there be a pledge taken (mortgaging) ; then if one of you entrust the other, let the one who is entrusted discharge his trust (faithfully), and let him be afraid of Allah, his Lord. And conceal not the evidence for he, who hides it, surely his heart is sinful. And Allah is All-Knower of what you do.

(2) Yes, whoever fulfils his pledge and fears Allah much; verily, then Allah loves those who are Al-Muttaqun (the pious - See V.2:2).

(3) And to everyone, We have appointed heirs of that (property) left by parents and relatives. To those also with whom you have made a pledge (brotherhood), give them their due portion (by Wasiyyah - will) . Truly, Allah is Ever a Witness over all things.

(4) And fulfil the Covenant of Allah (Bai'ah: pledge for Islam) when you have covenanted, and break not the oaths after you have confirmed them - and indeed you have appointed Allah your surety. Verily! Allah knows what you do.

(5) Verily, those who give Bai'ah (pledge) to you (O Muhammad صلى الله عليه وسلم) they are giving Bai'ah (pledge) to Allah. The Hand of Allah is over their hands. Then whosoever breaks his pledge, breaks it only to his own harm; and whosoever fulfils what he has covenanted with Allah, He will bestow on him a great reward.

(6) Indeed, Allah was pleased with the believers when they gave the Bai'ah (pledge) to you (O Muhammad صلى الله عليه وسلم) under the tree: He knew what was in their hearts, and He sent down As-Sakinah (calmness and tranquillity) upon them, and He rewarded them with a near victory.

(7) And those who believe and whose offspring follow them in Faith: to them shall We join their offspring, and We shall not decrease the reward of their deeds in anything. Every person is a pledge for that which he has earned.

(8) O Prophet! When believing women come to you to give you the Bai'ah (pledge), that they will not associate anything in worship with Allah, that they will not steal, that they will not commit illegal sexual intercourse, that they will not kill their children, that they will not utter slander, intentionally forging falsehood (i.e. by making illegal children belonging to their husbands), and that they will not disobey you in Ma'ruf (Islamic Monotheism and all that which Islam ordains), then accept their Bai'ah (pledge), and ask Allah to forgive them. Verily, Allah is Oft-Forgiving, Most Merciful.

(9) Every person is a pledge for what he has earned,