Skanda Purana 6.2.85.15

6.2.85.15

14 atha kuṭumbakeśvaraliṃgamāhātmyavarṇanam, tatra kṣīrābdhimanthanasamaye nirgataṃ kālakūṭaṃ pītvā tadutthaṃ dāhamasahamānena śaṃkareṇa śiprāyai tasya kālakūṭasya pradānam, tadgṛhītvā śiprāyā mahākālavane gamanam, śiprayā kāmeśvaraliṃgasamīpasthaliṃgopari tasya kālakūṭaviṣasya nikṣepaṇam, kālakūṭaviṣalepanāttaddarśanārthamāgatānāṃ viprāṇāṃ maraṇaprāptivarṇanam, śivena tatrāgatya viprāṇāṃ punarujjīvanakaraṇam, śivena talliṃgasya kuṭuṃvakeśvareti nāmakaraṇam, kuṭuṃbakeśvaraliṃgamāhātmyavarṇanam... 91 1

14. Now, the description of the māhātmya of the Kuṭumbakeśvara liṅga: there, at the time of churning the ocean of milk, Śaṃkara, unable to bear the burning sensation arising from having drunk the kālakūṭa poison that emerged, gave that kālakūṭa poison to the Śiprā; having taken it, the Śiprā went to the Mahākāla forest; the Śiprā threw that kālakūṭa poison onto the liṅga situated near the Kāmeśvara liṅga; the description of the brahmins meeting their death after coming for darśana on account of the smeared kālakūṭa poison; Śiva, having arrived there, revived the brahmins; Śiva named that liṅga Kuṭumbakeśvara; the description of the māhātmya of the Kuṭumbakeśvara liṅga. (91.1)