Bhashya
ऋतुषु पञ्चविध साम उपासीत ।ऋतुव्यवस्थाया यथो-क्ताम्बुनिमित्तत्वादानन्तर्यम् ।वसन्तो हिंकार, प्राथम्यात्,ग्रीष्म प्रस्ताव, यवादिसंग्रह प्रस्तूयते हि प्रावृडर्थम्, व-र्षा उद्गीथ, प्राधान्यात्, शरत् प्रतिहार, रोगिणा मृताना चप्रतिहरणात्, हेमन्तो निधनम्, निवाते निधनात्प्राणिनाम् ॥
In plain words
One should meditate upon the fivefold sāman in the seasons. This follows immediately because the arrangement of the seasons stems from the waters already discussed. Spring is the hiṃkāra because of its primacy. Summer is the prastāva because crops like barley are gathered then in preparation for the rains. The rainy season is the udgītha because of its paramount importance. Autumn is the pratihāra because sickness and death are warded off then. Winter is the nidhana because living beings find rest in sheltered places.
Close to the Sanskrit
One should meditate upon the fivefold sāman in the seasons. There is sequential order because the arrangement of seasons is caused by the aforementioned waters. Spring is hiṃkāra, because of primacy; summer is prastāva, because of the gathering of barley and the like, for it is brought forth for the rainy season; the rains are udgītha, because of predominance; autumn is pratihāra, because of the carrying away of the sick and the dead; winter is nidhana, from the resting of living beings in a sheltered place.