BAHYA ABHYANTARA VISHAYA AKSHEPI CHATURTHAH ||51||

बाह्याभ्यन्तर विषयाक्षेपी चतुर्थः ॥५१॥

bāhya-ābhyantara viṣaya-akṣepī caturthaḥ ||51||

The fourth pranayama technique ultimately transcends breath retention after exhaling or inhaling. ||51||


bāhya = external 
abhyantara = internal 
viṣayā = region; sphere 
bāhya-ābhyantra = external retention; breath retention after exhalation 
abhyantra-viṣayā = breath retention after inhaling 
ākṣepī = going beyond; surpassing
caturthaḥ = (nom. from caturtha) the fourth