• tamaḥ-dhāma — abode of darkness
  Contiguous join (tamaḥ + dhāma). Tamas — the guṇa of inertia and ignorance — is named as the very atmosphere inside Saubha. Bhāgavata cosmology: vehicles built from envy carry their own night with them, however high they fly.
• durāsadam — unapproachable
  duṣ + ā + √sad. Hard to approach. Gauḍīyas note that the same word describes Kṛṣṇa's abode in 11.5; māyā mimics the vocabulary of dhāma. The asuric counterfeit always borrows the syntax of the sacred.
• dvāravatīm — to Dvārakā
  Accusative of Dvāravatī — 'she of many gates.' Kṛṣṇa's island-city, Lakṣmī's dwelling. To attack Dvārakā is structurally identical to attacking Vaikuṇṭha; Gauḍīyas read aiśvarya-Dvārakā as Vaikuṇṭha-in-līlā.
• vairam — the enmity
  Accusative of vaira. In Gauḍīya rasa-vicāra, vaira is a śānta-tinged rasa — but vaira-bhakti (like that of Kaṁsa or Śiśupāla) is recognized as a back-door route. Śālva is in vaira without the secret current that liberated Kaṁsa; mere hate without constant smaraṇa of Kṛṣṇa as person is barren.
• smaran — remembering
  Present participle of √smṛ — the same root as smaraṇa, one of bhakti's nine limbs. The Bhāgavatam darkly notes that even asuras 'remember' Kṛṣṇa. The difference: their smaraṇa is vaira-smṛti, the devotee's is prema-smṛti.

• Where has my dwelling on grievance steered the trajectory of my life?
• What different destination might emerge if I let the grievance go?

Like a man who finally obtains the sword he had sharpened for years and walks straight toward the one city it can never cut, Śālva rushes Saubha to Dvārakā — but Dvārakā is the abode of Lakṣmī-Nārāyaṇa; no iron, however dark, can pierce that gate.