Whoever rejects the hadeeth of the Prophet salla Allahu alaihi wa Salam
is an apostate.
How would she know the number of Rakah in every Fard prayer or the
different percentages of zakat in money, gold, silver, crops, cattle etc?
Those who reject the hadeeth are hypocrites who want to undermine Islam
by crossing out the second source of Islam, which no one can understand
the Quran without.