وَمَا كُنتَ بِجَانِبِ ٱلطُّورِ إِذْ نَادَيْنَا وَلَـٰكِن رَّحْمَةً مِّن رَّبِّكَ لِتُنذِرَ قَوْمًا مَّآ أَتَىٰهُم مِّن نَّذِيرٍ مِّن قَبْلِكَ لَعَلَّهُمْ يَتَذَكَّرُونَ Qur’an Al-Qasas (28:46)Wam a kunta bij a nibi a l tt oori i th n a dayn a wal a kin ra h matan min rabbika litun th ira qawman m a at a hum min na th eerin min qablika laAAallahum yata th akkaroon a
According to some of the classical commentators, this second reference to "the slope of Mount Sinai" contains an allusion to the divine assurance mentioned in 7:156 : "My grace overspreads everything ..." (Tabari, Razi). This interpretation is most plausible in view of the subsequent reference to Muhammad's mission as "an act of thy Sustainer's grace (rahmah)".
This people was the Quraish. 'Though thou didst not see how Moses was invested with the prophetic office at Mount Tur, thou hast had similar experience thyself, and We have sent thee to the Quraish to warn them of all their sins, and to repent and come into the Faith'.