The Compendium of Caraka 8.9.33

8.9.33

khavaiguṇyānilākṣepaiḥ kiñcinmūtraṃ ca tiṣṭhati/
maṇisandhau sravet paścāttadarugvā 'atha cātiruk//

Due to defect of the channel and vāyu's convulsion, some urine also remains / in the glans junction and trickles afterward, either painless or extremely painful;