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

91:7Wa nafsinw wa maa sawwaahaa

91:8Fa-alhamahaa fujoorahaa wa taqwaahaa

91:11Kazzabat Samoodu bi taghwaahaaa

91:14Fakazzaboohu fa'aqaroohaa fadamdama 'alaihim Rabbuhum bizambihim fasaw waahaa