﴿ وَٱلَّذِينَ ءَامَنُوا۟ وَهَاجَرُوا۟ وَجَٰهَدُوا۟ فِى سَبِيلِ ٱللَّهِ وَٱلَّذِينَ ءَاوَوا۟ وَّنَصَرُوٓا۟ أُو۟لَٰٓئِكَ هُمُ ٱلْمُؤْمِنُونَ حَقًّۭا ۚ لَّهُم مَّغْفِرَةٌۭ وَرِزْقٌۭ كَرِيمٌۭ ﴾

“And they who have attained to faith, and who have forsaken the domain of evil and are striving hard in God's cause, as well as those who shelter and succour [them]-it is they, they who are truly believers! Forgiveness of sins awaits them, and a most excellent sustenance.”

Mentioned in the third verse (74) are words of praise for the Sahabah who emigrated from Makkah and for the Ansar of Madinah who helped them, as well as the attestation to their being true Muslims and the promise of forgiveness and respectable provision made to them. When it was said: أُولَـٰئِكَ هُمُ الْمُؤْمِنُونَ حَقًّا (those are the believers in truth), the hint given was in the direction that those who did not migrate were though Muslims, but their Islam was neither perfect, nor certain - because there existed the probability that they may really be hypocrites professing Islam only outwardly. After that, it was said: لَّهُم مَّغْفِرَ‌ةٌ (For them there is forgiveness) - as it has been explained in sound (Sahih) Ahadith: اَلاِسلَامُ یَھدِمُ مَا کَانَ قَبلَہ (Islam demolishes what was before it) and: والھِجرَۃُ تَھدِمُ مَا کَانَ قَبلَھَا (Hijrah razes what was before it). In short, this means that the act of becoming a Muslim goes on to demolish the entire edifice of past sins. Similarly, the making of Hijrah razes all past sins.