And when regret overcame them and they saw that they had gone (7:149)

﴿وَلَمَّا سُقِطَ فِي أَيْدِيهِمْ وَرَأَوْا أَنَّهُمْ قَدْ ضَلُّوا قَالُوا لَئِن لَّمْ يَرْحَمْنَا رَبُّنَا وَيَغْفِرْ لَنَا لَنَكُونَنَّ مِنَ الْخَاسِرِينَ﴾
[ الأعراف: 149]

7:149 And when regret overcame them and they saw that they had gone astray, they said, "If our Lord does not have mercy upon us and forgive us, we will surely be among the losers."

When they regretted their actions and did not know how to make-up for their wrongdoing, realising that they had gone astray from the straight path by worshipping the calf besides to Allah, they said: 'If our Lord does not have mercy on us, by enabling us to do as He instructed, and if He does not forgive us for having worshipped the calf, then we would certainly be among the losers in the life of this world and in the Afterlife.
'

And when they regretted and saw that they had gone astray, they (repented and) said: "If our Lord have not mercy upon us and forgive us, we shall certainly be of the losers."

phonetic Transliteration

Walamma suqita fee aydeehim waraaw annahum qad dalloo qaloo lain lam yarhamna rabbuna wayaghfir lana lanakoonanna mina alkhasireena

Abdullah Yusuf Ali - Translation

When they repented, and saw that they had erred, they said: "If our Lord have not mercy upon us and forgive us, we shall indeed be of those who perish."

Safi-ur-Rahman al-Mubarakpuri

And when they regretted and saw that they had gone astray, they said: "If our Lord have not mercy upon us and forgive us, we shall certainly be of the losers"

Page 168 English transliteration