Matsyapurana 158.32

158.32

praviśya jālarandhreṇa śukarūpī hutāśanaḥ
dadṛśe śayane śarvaṃ rataṃ girijayā saha //

Agni assuming the form of a parrot saw through an opening the Lord enjoying the company of Parvatî when getting annoyed Śiva said 'This hindrance has been caused by you and the essence will, therefore, get within you Agni thus addressed swallowed the semen virile of Mahâdeva holding it in His palms—24-26