Bhagavad Gita · 9.19

तपाम्यहमहं वर्षं निगृह्णाम्युत्सृजामि च।अमृतं चैव मृत्युश्च सदसच्चाहमर्जुन॥

tapāmy aham ahaṁ varṣhaṁ nigṛhṇāmy utsṛjāmi cha amṛtaṁ chaiva mṛtyuśh cha sad asach chāham arjuna

I give heat, I withhold and release the rain. I am immortality and also death. I am being and non-being, O Arjuna.

— Bhagavad Gita 9.19

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)