With accent marks:
Гото́вь са́ни ле́том, а теле́гу зимо́й.
Get your sleigh ready in summer and your (horse-drawn) cart in winter.
This proverb reminds us to plan what we want to do and what we will need to do in advance so that any difficulties and unforeseen situations do not catch us by surprise.
There is almost the same proverb in English: "Repair your cart in December, in July your sledge remember".
Other Russian proverbs
Appetite comes with eating.
A well-fed man does not understand a starving one.
A wolf is fed by his legs
Don’t wave your fists after the fight.
What goes around comes around.
The quieter you go, the further you'll get.
Bitter truth is better than sweet lies.
Eggs don't teach the chicken.