[Advaita-l] A verse from Manu Smriti

[Shashwata Shastri]

Namaste,
अग्निबायुरबिभ्यस्तु त्रयं ब्रह्म सनातनम्‌। दुदोह
यज्ञसिद्ध्यर्थमृग्‌यजुःसामलक्षणम्‌।। (1/23)
- The above shloka contains a ’part of speech’ termed  'तु'. What does it
denote and how does it elaborate the part of speech - 'त्रयं'? Some
insightful thoughts on this from the learned members will be very helpful.
Best Regards,
Shashwata Chowdhury