Valmiki Ramayana Sundara Kanda Sarga 1 Shloka 14

उत्तमवीर्येण by the highly valiant self, तेन by him, पीड्यमानः pressed very hard, सः पर्वतः that mountain, मत्तः intoxicated, द्विपः elephant, मदम् इव like the rut, सलिलम् the water, सम्प्रसुस्राव exuded profusely.

The mountain pressed hard under the feet of the valiant (Hanuman), discharged streams of water just as an elephant in rut would exude water of intoxication.