bayhaqi:21081 –
Abū al-Ḥusayn b. Bishrān al-ʿAdl> Ismāʿīl b. Muḥammad al-Ṣaffār > Saʿdān b. Naṣr > Sufyān b. ʿUyaynah > ʿUbaydullāh b. Abū Yazīd > Ibn ʿAbbās > Khilāl from Khilāl al-Jāhiliyyah al-Ṭaʿn Fī
[Machine] They say it is the praying for rain by the clouds.