L1definition
ādyā sāmānya-bhakty-āḍhyā dvitīyā sādhanānvitā |
ādyāthe first one — that is, the first wave (laharī)पहली (लहरी)
sāmānya-bhakti-āḍhyāis rich in devotion of the general kind — bhakti taken broadly, before it is narrowed to any one stage nom. fem. sg., agreeing with ādyā (laharī); āḍhyā 'rich in, full of'सामान्य भक्ति से भरपूर
dvitīyāthe second one — the second waveदूसरी (लहरी)
sādhana-anvitāis joined with sādhana — with devotion as practice, the disciplined method nom. fem. sg., agreeing with dvitīyā; anvita 'accompanied by, joined with'साधन से युक्त
ādyā — the first wave; sāmānya-bhakti-āḍhyā — is rich in general devotion; dvitīyā — the second wave; sādhana-anvitā — is joined with sādhana (devotion as practice).
ādyā — पहली लहरी; sāmānya-bhakti-āḍhyā — सामान्य भक्ति से भरपूर; dvitīyā — दूसरी लहरी; sādhana-anvitā — साधन से युक्त
He now names the waves in order. The first wave is full of bhakti in its general sense — devotion taken broadly, not yet pinned to any single stage. The second wave is joined with sādhana, that is, devotion as disciplined practice. (Each phrase leaves "the wave" and "is" understood; you supply them: "the first [wave] is…, the second [wave] is…")
पहली लहरी सामान्य भक्ति से भरपूर है। और दूसरी लहरी साधन से युक्त है।
sādhana: in the wider tradition simply the 'means' or method to reach a goal; here it names one specific stage of bhakti — devotion practiced as a method, the second of the four waves.
साधन: व्यापक परम्परा में यह किसी लक्ष्य तक पहुँचने का केवल 'उपाय' या साधनरूप मार्ग है; परन्तु यहाँ यह भक्ति की एक विशिष्ट अवस्था का नाम है — साधनरूप में अनुष्ठित भक्ति, चार लहरियों में से दूसरी।
L2definition
bhāvāśritā tṛtīyā ca turyā prema-nirūpikā ||
bhāva-āśritārests on bhāva — takes its stand on the awakened feeling of devotion nom. fem. sg.; fronted here, but describes tṛtīyā; āśrita 'resting on, grounded in'भाव पर आश्रित
tṛtīyāthe third one — the third waveतीसरी (लहरी)
caand — linking this wave into the same listऔर
turyāthe fourth one — the fourth waveचौथी (लहरी)
prema-nirūpikāsets out prema — lays out and defines prema, love in its full ripeness nom. fem. sg., agreeing with turyā; nirūpikā 'the one that defines/expounds'प्रेम का निरूपण करने वाली
tṛtīyā ca — and the third wave; bhāva-āśritā — rests on bhāva; turyā — the fourth wave; prema-nirūpikā — sets out prema (mature love).
bhāva-āśritā — भाव पर आश्रित; tṛtīyā — तीसरी लहरी; ca — और; turyā — चौथी लहरी; prema-nirūpikā — प्रेम का निरूपण करने वाली
And the third wave rests on bhāva — the awakened feeling of devotion. The fourth wave sets out prema, love in its full maturity. So the four waves climb in order: general bhakti, then sādhana, then bhāva, then prema. Again "wave" and "is" are understood in each phrase.
तीसरी लहरी भाव पर आश्रित है। और चौथी लहरी प्रेम का निरूपण करने वाली है।
bhāva / prema: bhakti's own vocabulary for two ascending stages of the heart — bhāva the first sprouting of the devotional emotion, prema its fully ripened, unshakable form. Here they name the third and fourth waves respectively.
भाव / प्रेम: ये भक्ति के अपने ही शब्द हैं, जो हृदय की दो उत्तरोत्तर चढ़ती अवस्थाओं को कहते हैं — भाव अर्थात् भक्ति-भाव का प्रथम अंकुरण, और प्रेम उसी का पूर्ण परिपक्व, अटल रूप। यहाँ ये क्रमशः तीसरी और चौथी लहरी का नाम हैं।