So when Our angels came to Lot, he grieved for them, and felt powerless to help them, and said: "This is a day of sorrow.
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Tafseer
'Abdullāh Ibn 'Abbās / Muḥammad al-Fīrūzabādī
تفسير : (and when our messengers) gabriel and the angels with him (came unto lot, he was distressed) he did not like their coming (and knew not how to protect them) from his people. (he said) within himself: (this is a distressful day) for me.
Jalāl al-Dīn al-Maḥallī
تفسير : and when our messengers came to lot, he was distressed, he was grieved on their account, and felt constrained in his power to protect them, because they had handsome faces and were dressed as [visiting] guests, and so he feared for them from his people, and he said, ‘this is a distressful, a very difficult, day’.