बौधायन श्रौतसूत्रम् (कृष्ण यजुर्वेद तैत्तिरीय शाखा - सम्पूर्ण प्रश्न एवं श्रौत-याग कल्प सटीक)

'? No, wait, look at "हविषो ऽग्निर्मूर्धा" in line 6.
In line 14: look at the mantra:
"अदितिर्न उरुष्यतु महीमू षु मातरमित्यादित्यस्य"
Wait, TS mantra is "अदितिर्न उरुष्यतु" (Aditir na uruṣyatu) and "महीमू षु मातरं सुव्रतानाम्" (Mahīm ū ṣu mātaram...).
In TS 1.5.11.5: "अदितिर्न उरुष्यत्वदितिः शर्म यच्छतु"
In TS 4.1.5.1: "अदितिर्न उरुष्यत्वनहो..."
Why does the book write:
"न्द्राग्नस्यादितिर्न" or "न्द्राग्नस्योदितिर्न"?
Wait, look at the image:
न्द्रा-ग्न-स्य-
Wait, after 'स्य', is there an avagraha? No.
Is it "न्द्राग्नस्योदितिर्न"?
Wait, let's look very closely at line 14, first few aksharas:
1: न्द्रा
2: ग्न
3: स्य
Wait, on 'स्य', is that an o-matra?
Wait! Look at the top of 'स्य':
There is a vertical bar AFTER 'स्य': "स्या"!
Wait, what is above that vertical bar? Nothing!
Wait, then