Surah Al-A'raf (The Heights), Verse 131

فَاِذَا جَآءَتْهُمُ الْحَسَنَةُ قَالُوْا لَنَا هٰذِهٖ وَاِنْ تُصِبْهُمْ سَیِّئَةٌ یَّطَّیَّرُوْا بِمُوْسٰی وَمَنْ مَّعَهٗ اَلَاۤ اِنَّمَا طٰٓىِٕرُهُمْ عِنْدَ اللّٰهِ وَلٰكِنَّ اَكْثَرَهُمْ لَا یَعْلَمُوْنَ ۟

Fa izaa jaaa'at humul hasanatu qaaloo lanaa haazihee wa in tusibhum saiyi'atuny yattaiyaroo bi Moosaa wa mam ma'ah; alaaa innamaa taaa'iruhum 'indal laahi wa laakinna aksarahum laa ya'lamoon

“But when good (times) came, they said, "This is due to us;" When gripped by calamity, they ascribed it to evil omens connected with Moses and those with him! Behold! in truth the omens of evil are theirs in Allah's sight, but most of them do not understand!”

Quran 7:131 (Yusuf Ali Translation)