النائب المفعول إن يَلقَهُ

مُرامِياً فالنَّائِبُ الصَّائبُ

If the object finds its representative

Then the fitting representative takes its place

وهذه في النحو معروفةٌ

يعلمها الحاضرُ والغائِبُ

And this in grammar is well known

Both the present and the absent know it

وإِن يُزاحِم نائبا فاعِلٌ

يَفِرَّ خَوفَ الفاعلِ النائِبُ

And if the subject disturbs a representative

The representative flees, fearing the subject