4 verses have
laa
in Edition English Transliteration / Ash-Shams (The Sun)

91:2Wal qamari izaa talaa haa

91:3Wannahaari izaa jallaa haa

91:13Faqaala lahum Rasoolul laahi naaqatal laahi wa suqiyaahaa

91:15Wa laa yakhaafu'uqbaahaa