Astanga Hrudaya
मुष्कौ वङ्क्षणतः प्राप्य फलकोशाभिवाहिनीः । प्रपीड्य धमनीर्वृद्धिं करोति फलकोशयोः ॥ २२ ॥
producing swelling and pain, on reaching the vessels of the scrotum followed by pulling down of the dhamani (blood vessels) going into vessels inside the scrotum causes Vrddhi (enlargement) of the scrotum vriddhi is of seven kinds-viz
english translation
muSkau vaGkSaNataH prApya phalakozAbhivAhinIH । prapIDya dhamanIrvRddhiM karoti phalakozayoH ॥ 22 ॥
hk transliteration by Sanscript