यथाशक्ति yathāśhakti

शक्ति śhakti (sanskrit)

Power, strength, potency, energy.
Name of the goddess personifying divine power.
The energy or active power of a deity personified as his wife (as Gaurī of Śhiv, Lakṣhmī of viṣhṇu, &c.)
(Brahma kumaris) Sister, mother.
Śhiv Śhakti, the powers of Śhiv. In Bhakti they are portrayed as goddesses sitting on a lion, swan, lotus etc. They are symbolic of the victory over vices (demons). As power of Śhiv, brothers are Śhiv Śhakti too.

S يتها यथा yathā, adv. In which manner, as, like as, like, according to; thus, so; as is right or proper; fitly, suitably. yathā-śakti, vulg. yathā-śakt, adv. According to power or ability or means; to the best of (one's) ability, as far as possible.