Canto 2 -
Ayodhyā-kāṇḍa
Chapter 44: Sumitrā Consoles Kausalyā
Text 2.44.14

या श्रीः शौर्यं च रामस्य या च कल्याणसत्त्वता।
निवृत्तारण्यवासः स क्षिप्रं राज्यमवाप्स्यति॥

yā śrīḥ śauryaṁ ca rāmasya yā ca kalyāṇa-sattvatā
nivṛttāraṇya-vāsaḥ sa kṣipraṁ rājyam avāpsyati

śrīḥ = auspicious beauty; śauryam ca = conquering nature 1; rāmasya = [because of] Rāma’s; ca = and; kalyāṇa-sattvatā = excellent strength; nivṛtta-araṇya-vāsaḥ = after completing His residence in the forest; saḥ = He; kṣipram = quickly; rājyam = the kingdom; avāpsyati = will attain.

[Because of] Rāma’s auspicious beauty, conquering nature and excellent strength, He will quickly attain the kingdom after completing His residence in the forest.

Śrīḥ indicates that Rāma’s beautiful body was endowed with all auspicious characteristics. Rāma’s auspicious beauty, conquering nature and extreme strength were the unique reasons for His quick attainment of the kingdom.