sankarayoh
hari-śańkarayoḥ — between Lord Hari (Kṛṣṇa) and Lord Śańkara (Śiva);
SB 10.62.1
kṛṣṇa-śańkarayoḥ — between Lord Kṛṣṇa and Lord Śiva;
SB 10.63.7