SB 5.25.3

yasya ha vā idaṁ kālenopasañjihīrṣato ’marṣa-viracita-rucira-bhramad-bhruvor antareṇa sāṅkarṣaṇo nāma rudra ekādaśa-vyūhas try-akṣas tri-śikhaṁ śūlam uttambhayann udatiṣṭhat.
Synonyms: 
yasya — of whom; ha — indeed; idam — this (material world); kālena — in due course of time; upasañjihīrṣataḥ — desiring to destroy; amarṣa — by anger; viracita — formed; rucira — very beautiful; bhramat — moving; bhruvoḥ — the two eyebrows; antareṇa — from between; sāṅkarṣaṇaḥ nāma — named Sāṅkarṣaṇa; rudraḥ — an incarnation of Lord Śiva; ekādaśa-vyūhaḥ — who has eleven expansions; tri-akṣaḥ — three eyes; tri-śikham — having three points; śūlam — a trident; uttambhayan — raising; udatiṣṭhat — arose.
Translation: 
At the time of devastation, when Lord Anantadeva desires to destroy the entire creation, He becomes slightly angry. Then from between His two eyebrows appears three-eyed Rudra, carrying a trident. This Rudra, who is known as Sāṅkarṣaṇa, is the embodiment of the eleven Rudras, or incarnations of Lord Śiva. He appears in order to devastate the entire creation.
Purport: 

In each creation, the living entities are given a chance to close their business as conditioned souls. When they misuse this opportunity and do not go back home, back to Godhead, Lord Saṅkarṣaṇa becomes angry. The eleven Rudras, expansions of Lord Śiva, come out of Lord Saṅkarṣaṇa’s eyebrows due to His angry mood, and all of them together devastate the entire creation.