Shiva Purana
मिषतां देवतानां च वसिष्ठस्य च कौशिकः ॥ सशरीरं तदा तं तु दिवमारोह यत्प्रभुः ॥ १८॥
Ever as the gods and Vasiṣṭha were watching, the saintly lord Viśvāmitra made him ascend heaven in his physical body.
english translation
miSatAM devatAnAM ca vasiSThasya ca kauzikaH ॥ sazarIraM tadA taM tu divamAroha yatprabhuH ॥ 18॥
hk transliteration by Sanscript