(And Abraham who paid his debt) i.e. he conveyed the message of his Lord and acted upon that which Allah had commanded him; it is also said that this means: he did as he was told in his dream vision:
- 53:3737
وَإِبْرَاهِيمَ الَّذِي وَفَّىٰ
And of Abraham who fulfilled his trust? --
- common.revelation-Meccan
- common.hizb : 211