springs higher than the Euphrates? — Said R. Mesharshea: These are the upper parts [the sources] of the Euphrates. But is it not written: And as to the fourth river it is the Euphrates? — Said R. Nahman b. Isaac, (others say: R. Aha b. Jacob): [It means thus]: It is the Euphrates [mentioned] first. It has been taught: Its name is Yubal [river] because Scripture says: For he shall be like a tree planted by the waters and that spreadeth the roots by the river [Yubal]. And why is it called Perath? Because its waters are fruitful [fructifying] and increase. [But the Sages say its name is Perath. The Master said: Because its waters are fruitful and increase]. This supports Samuel. For Samuel said: The river grows from the waters coming down its banks. In this he differs from Rab. For R. Ammi reported in the name of Rab: The rise of the Euphrates is a weighty witness [indication] that it has rained in Palestine. The father of Samuel made a mikweh for his daughters in the days of Nisan and had mats laid for them in the days of Tishri. ‘He made a mikweh in the days of Nisan’ because he agreed with Rab. For R. Ammi reported in the name of Rab: The rise of the Euphrates is a weighty witness [indication] that it has rained in Palestine. We fear therefore lest the dripping water will be more than the flowing water and thus the greater part will consist of rain water. ‘And had mats laid for them in the days of Tishri’. And there is a discrepancy between two opinions held by him. For Samuel said: Waters do not ritually cleanse in a running condition, except the river Euphrates in the days of Tishri. MISHNAH. AN ANIMAL BOUGHT OR GIVEN AS A PRESENT IS EXEMPT FROM THE LAW OF CATTLE TITHE. GEMARA. Whence is this proved? — Said R. Kahana: Because Scripture says: The first-born of thy sons thou shalt give unto Me. Likewise thou shalt do with thine oxen and with thy sheep; 16ᵃᵇᶜᵈᵉᶠᵍʰⁱʲᵏˡᵐⁿᵒᵖ