"And when we heard the guidance," meaning the Quran, "we believed in it," meaning we affirmed it. "So he does not fear any bakhs (deficiency)," meaning that anything should be deducted from his deeds, "nor any rahaq (injustice)," meaning oppression that he should be burdened with what he did not do.
Muhammad said: The root of (al-rahaq) in the language is a defect and injustice; it is said: rahaqa and tarahaqa in his religion if he commits injustice. Tafsir of Surah al-Jinn from verse (14 - 17)