Tafsir of Al-Hijr 15:2

ربما يود الذين كفروا

How much would those who disbelieved wish, Here Allah tells us that they will regret having lived in disbelief, and will wish that they had been Muslims in this world

ربما يود الذين كفروا لو كانوا مسلمين

How much would those who disbelieved wish that they had been Muslims. Sufyan Ath-Thawri reported from Salamah bin Kuhayl, who reported from Abi Az-Za`ra', from Abdullah, who said: "This is about the Jahannamiyyun (the sinners among the believers who will stay in Hell for some time), when they (the disbelievers) see them being brought out of Hell.'' Ibn Jarir reported that Ibn Abbas and Anas bin Malik explained that; this Ayah refers to the Day when Allah will detain the sinful Muslims in Hell along with the idolators. He said: "The idolators will say to them, `What you used to worship on earth has not helped you.' Then by virtue of His mercy, Allah will be angry for their sake, and He will remove them (from it). That is when

ربما يود الذين كفروا لو كانوا مسلمين

(How much would those who disbelieved wish that they had been Muslims).''