Do not grieve over them, and do not be distressed by what they contrive.
70
Tafseer
'Abdullāh Ibn 'Abbās / Muḥammad al-Fīrūzabādī
تفسير : (and grieve thou not) o muhammad (for them) if they do not believe; it is also said that this means: do not grieve for their destruction, (nor be in distress because of what they plot (against you)) and do not be grieved because of what they do and say against you.
Jalāl al-Dīn al-Maḥallī
تفسير : and do not grieve for them, and do not be distressed by their schemes — this is meant to comfort the prophet (s), in other words, do not be concerned with their plotting against you, for we will grant you victory over them.