Shiva Purana
सम्पूज्य परया भक्त्या सोमं सोमार्द्धशेखरम् ॥ यमादियोगनिरताश्शिवध्यानपराभवन् ॥ ५२॥
Having worshiped with utmost devotion the moon whose peak is half the moon They were engaged in Yama and other yogas and became devoted to the meditation of Lord Śiva.
english translation
sampUjya parayA bhaktyA somaM somArddhazekharam ॥ yamAdiyoganiratAzzivadhyAnaparAbhavan ॥ 52॥
hk transliteration by Sanscript