Part,  -

 1   1 1 |            28 R I.360 - 364 {3/69} niyamāṛthaḥ ayam ārambhaḥ .~(1.1.49.
 2   1 1 |     pūrvottarayoḥ yogayoḥ aviśeṣāt niyamārthaḥ ayam ārambhaḥ .~(1.1.66 -
 3   1 1 |             16/62} uktam ca etat : niyamārthaḥ ayam ārambhaḥ iti .~(1.1.
 4   1 3 |           15 R II.233 - 237 {3/53} niyamārthaḥ ayam ārambhaḥ .~(1.3.12.
 5   1 3 |              237 {4/53} kim ucyate niyamārthaḥ ayam iti na punaḥ vidhyarthaḥ
 6   1 4 |           ṅiti hrasvaḥ ca iti ayam niyamārthaḥ bhaviṣyati .~(1.4.3.1).
 7   1 4 |           319.8 - 9 R II.363 {2/5} niyamārthaḥ ayamārambhaḥ .~(1.4.15)
 8   1 4 |          27 R II.471 - 476 {3/100} niyamārthaḥ ayam ārambhaḥ .~(1.4.105,
 9   2 2 |            15 - 22 R II.697 {2/18} niyamārthaḥ .~(2.2.20) P I.418.15 -
10   2 2 | ārabhyamāṇaḥ antareṇa api evakāram niyamārthaḥ bhaviṣyati .~(2.2.20) P
11   3 2 |      kvibvacanam niyamārtham </V>. niyamārthaḥ ayam ārambhaḥ .~(3.2.87)
12   3 3 |            atriprasaktam iti kṛtvā niyamārthaḥ ayam vijñāyeta .~(3.3.19)
13   3 3 |           7 R III.365 - 366 {3/18} niyamārthaḥ ayam ārambhaḥ .~(3.3.163)
14   3 4 |       anudāttaṅitaḥ iti eṣaḥ yogaḥ niyamārthaḥ bhaviṣyati .~(3.4.69) P
15   3 4 |             34/70} yadi eṣaḥ yogaḥ niyamārthaḥ vidhiḥ na prakalpate .~(
16   3 4 |           evamādi anukramaṇam yadi niyamāṛthaḥ vidhiḥ na prakalpate .~(
17   3 4 |            R III.412 - 414 {17/47} niyamāṛthaḥ punaḥ sati na arthaḥ evakāreṇa .~(
18   3 4 |     ārabhyamāṇaḥ antareṇa evakāram niyamārthaḥ bhaviṣyati .~(3.4.110) P
19   3 4 |             414 {31/47} astu tarhi niyamārthaḥ .~(3.4.110) P II.187.2 -
20   4 1 |         213.9 - 10 R III.489 {2/5} niyamāṛthaḥ ayam ārambhaḥ .~(4.1.30)
21   4 2 |          644 - 647 {40/52} atha vā niyamārthaḥ ayam ārambhaḥ .~(4.2.45.
22   4 3 |          18 R III.700 - 701 {9/36} niyamārthaḥ ayam ārambhaḥ .~(4.3.25)
23   5 3 |         417.9 - 12 R IV.215 {2/10} niyamārthaḥ .~(5.3.58) P II.417.9 -
24   5 3 |     ārabhyamāṇaḥ antareṇa evakāram niyamārthaḥ bhaviṣyati .~(5.3.58) P
25   6 1 |          24 - 55.2 R IV.394 {2/13} niyamārthaḥ .~(6.1.80) P III.54.24 -
26   6 2 |          25 R IV.561 - 562 {16/22} niyamārthaḥ .~(6.2.80) P III.131.16 -
27   6 2 |     ārabhyamāṇaḥ antareṇa evakāram niyamāṛthaḥ bhaviṣyati .~(6.2.80) P
28   7 2 |            146.3 {2/25} evam tarhi niyamārthaḥ ayam ārambhaḥ .~(7.2.63)
29   7 2 |         146.5 - 7 {2/5} evam tarhi niyamārthaḥ ayam ārambhaḥ .~(7.2.64)
30   7 2 |          300.2 - 16 R V.147 {3/25} niyamārthaḥ ayam ārambhaḥ .~(7.2.67.
31   8 1 |          375.20 - 22 R V.330 {2/5} niyamārthaḥ ayam ārambhaḥ .~(8.1.46)
32   8 3 |          426.20 - 22 R V.439 {2/5} niyamārthaḥ ayam ārambhaḥ .~(8.3.16)
33   8 3 |            21 R V.470 - 471 {5/35} niyamārthaḥ .~(8.3.61) P III.441.6 -
34   8 3 |            antareṇa evakārakaraṇam niyamārthaḥ bhaviṣyati .~(8.3.61) P
35   8 3 |          22 - 442.8 R V.472 {3/13} niyamārthaḥ ayam ārambhaḥ .~(8.3.64)
36   8 4 |         462.6 R V.503 - 504 {2/37} niyamārthaḥ ayam ārambhaḥ .~(8.4.32)