Behold those who do cross the river (inspite of the erosion of its banks) and safely reach the yonder bank! (O Suhni! like them) you too should equip yourself with the raft of reliance on Allah, and commit yourself to Him. Verily they shall not drown, who work in union with Him.
Note: In verses No. 4 and 5 Mehar solicited the aid of boatmen to find out his beloved Suhni. He even offered them whey to tempt them. But he failed to evoke any response from them. In these verses the boatmen may be interpreted as the deities, who are boosted up as 'partners' of Allah by the Polytheists. Then Mehar turned to another category of "boatmen of the yonder side" as per verse No. 6. These boatmen may be interpreted as the angels whom the polytheists worshipped as daughters of Allah. From them too Mehar failed to elicit a response. As per verse No. 9 Mehar got into despondency. He even found fault with Suhni for having entered the river when the odds were against her. Hence in the next verses the poet exhorted him to cheer up and commit himself to Allah, who indeed does not allow them to sink who rely on Him.
The following verses of the Quran are relevant:
Verily those, on whom you call beside Allah, are mere servants like you. Then call on them and let them answer you: "if you are truthful"!
(194, Al-Airaf).
O you who believe! "Seek help with patience and prayer. Surely Allah is with the steadfast. (153, AI-Baqarah).
Say! "He is my Lord, and there is no God excepting He; I rely on Him and to Him have I to return." (30, Ra'd).
Note: Rewrote the first stanza as under as per Mr. Trumpp, Bombay and Bhit editions respectively. پرين ڀر درياه، پس جي پار پون ٿيون
کیمیاداری دوای پوست کن
دشمنان رازین صنامت دوست کن
(Roomi)
You have alchemy (i.e. Divine love) within yourself. It is capable of improving the nature of objects. Treat with it your internal and external foes. If you do it, your 'nafs' and the river animals will be your friends.

River is eroding banks, those who will enter the river,
Have the raft of trust in Allah and leave every thing to Him,
Those, who have blessing of Sahar, will never drown.