Astanga Hrudaya
स्थूलान्त्रबद्धः सद्योघ्नो विड्वातवमनो गुदः। मूत्राशयो धनुर्वक्रो बस्तिरल्पास्रमांसगः॥१०॥
Attached to the large intestine is guda marma, which expels the flatus and feces, its injury leads to quick death. Mutrashaya (urinary bladder) curved like a bow, made up of very little of muscle tissue and blood, located inside the pelvis, with one orifice pointed downwards, it is the basti (marma);
english translation
sthUlAntrabaddhaH sadyoghno viDvAtavamano gudaH। mUtrAzayo dhanurvakro bastiralpAsramAMsagaH॥10॥
hk transliteration by Sanscript